<?xml version="1.0" encoding="UTF-8"?>
<dxl:DXLMessage xmlns:dxl="http://greenplum.com/dxl/2010/12/">
  <dxl:Comment><![CDATA[
    Test case: Verify inner join derives match spec with outer relation's nulls colocation value

drop table if exists t1;
drop table if exists t2;

CREATE TABLE t1 (a1 int, b1 int, c1 int) DISTRIBUTED BY (a1);
CREATE TABLE t2 (a2 int, b2 int, c2 int) DISTRIBUTED BY (a2);

INSERT INTO t1 VALUES(1, 1, 1);
INSERT INTO t2 VALUES(1, 2, 4);

analyze t1;
analyze t2;

EXPLAIN SELECT b2, sum(c1) FROM t1 LEFT JOIN t2 ON a1 = b2 GROUP BY b2 ORDER BY b2;

                                                              QUERY PLAN
---------------------------------------------------------------------------------------------------------------------------------------
 Gather Motion 3:1  (slice1; segments: 3)  (cost=0.00..862.00 rows=1 width=12)
   Merge Key: t2.b2
   ->  Sort  (cost=0.00..862.00 rows=1 width=12)
         Sort Key: t2.b2
         ->  Finalize GroupAggregate  (cost=0.00..862.00 rows=1 width=12)
               Group Key: t2.b2
               ->  Sort  (cost=0.00..862.00 rows=1 width=12)
                     Sort Key: t2.b2
                     ->  Redistribute Motion 3:3  (slice2; segments: 3)  (cost=0.00..862.00 rows=1 width=12)
                           Hash Key: t2.b2
                           ->  Partial GroupAggregate  (cost=0.00..862.00 rows=1 width=12)
                                 Group Key: t2.b2
                                 ->  Sort  (cost=0.00..862.00 rows=1 width=8)
                                       Sort Key: t2.b2
                                       ->  Hash Left Join  (cost=0.00..862.00 rows=1 width=8)
                                             Hash Cond: (t1.a1 = t2.b2)
                                             ->  Seq Scan on t1  (cost=0.00..431.00 rows=1 width=8)
                                             ->  Hash  (cost=431.00..431.00 rows=1 width=4)
                                                   ->  Broadcast Motion 3:3  (slice3; segments: 3)  (cost=0.00..431.00 rows=1 width=4)
                                                         ->  Seq Scan on t2  (cost=0.00..431.00 rows=1 width=4)
 Optimizer: Pivotal Optimizer (GPORCA)
(21 rows)

]]></dxl:Comment>
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